BACKGROUND OF THE INVENTION
Field of the Invention
[0001] The present invention generally relates to a refrigerator. More particularly, the
present invention relates to a refrigerator configured to prevent a safety accident
due to a raising/lowering device moving a container upward and downward.
Description of the Related Art
[0002] Generally, a refrigerator is a home appliance that is provided to store various foods
or beverages for a long time by cold air generated by circulation of a refrigerant
according to a refrigeration cycle.
[0003] The refrigerator is divided into two types of refrigerators: a common refrigerator
that can store storage items a user wants to store regardless of a type of food or
drink; and an exclusive-use refrigerator that varies in size or function on the basis
of a type of storage item to be stored. The exclusive use refrigerator includes a
kimchi refrigerator, a wine refrigerator, and so on. In addition, the refrigerator
may be classified into various types depending on a door opening and closing method
of a storage chamber in a cabinet, such as a swinging door-type refrigerator, a drawer-type
refrigerator, and a hybrid-type refrigerator having both doors and drawers.
[0004] Here, the hybrid-type refrigerator has a structure in which a swinging door is provided
in an upper portion of the cabinet and a drawer is provided in a lower portion thereof.
[0005] The drawer provided in the drawer refrigerator or the hybrid-type refrigerator is
opened from an inside space of the cabinet in a sliding manner by user's operation.
In addition, the drawer is closed by being pushed into the inside space of the cabinet
by user's pushing operation, thereby allowing an open front portion of the cabinet
to be closed. The drawer includes a front panel and a storage room, the front panel
forming a front surface of the refrigerator and being pulled out/pushed in, thereby
allowing the inside space of the cabinet to be opened/closed and the storage room
being provided in rear of the front panel and received in the inside space of the
cabinet. By pulling the front panel, the storage room is opened from the inside space
of the cabinet, thus various foods can be stored in and taken out from the storage
room.
[0006] Meanwhile, the drawer provided in the drawer refrigerator or the hybrid-type refrigerator
is mainly provided in the lower portion of the cabinet. This is because, due to the
weight of storage items stored in the storage room of the drawer, the drawer may be
removed from the cabinet and fall down forward when the drawer is opened.
[0007] Accordingly, as for the drawer provided at the lower part of the cabinet, a user
is required to bend at the waist to take out a container or foods received in the
drawer. Accordingly, when the container or the foods are heavy, the heavy container
or foods may cause inconvenience or injury when used.
[0008] In order to solve these problems, various structures have been developed in which
the drawer can be moved upward and downward. Representatively,
U.S. Patent No. 9,377,238 discloses a refrigerator provided with a lifting mechanism for moving a bin upward
and downward provided in a refrigerating chamber, and
Korean Patent Application Publication No. 10-2019-0081331 discloses a refrigerator provided with a raising/lowering device.
[0009] However, in such a prior art, the lifting mechanism for moving the bin upward and
downward has a structure that is disposed outside and exposed to the outside of the
bin, so the appearance of the structure is not good and there is a safety accident
such as finger trapping in a peripheral gap of a raising/lowering device or a raising/lowering
member (container).
[0011] EP 3 505 854 A1 presents a refrigerator includes a cabinet in which an upper storage space and a
lower storage space are defined, a door part inserted and withdrawn to open and close
the lower storage space, a drawer part connected to the door part so as to be inserted
into and withdrawn from the lower storage space, a support member which is provided
in the drawer part and on which a food or container is seated, and an elevation device
disposed on each of both side surfaces of the drawer part and coupled to each of both
side ends of the support member to vertically elevate the support member in a state
in which the drawer door is withdrawn.
SUMMARY OF THE INVENTION
[0012] The present invention has been made keeping in mind the above problems occurring
in the related art, and the present invention is intended to propose a refrigerator,
wherein a peripheral gap of a raising/lowering device is blocked.
[0013] In addition, the present invention is intended to propose a refrigerator, wherein
a finger of a user is prevented from being inserted into the gap between the raising/lowering
device and an inner cover of the storage room.
[0014] In addition, the present invention is intended to propose a refrigerator, wherein
even when a child's finger is inserted into the peripheral gap of the raising/lowering
device, a safety accident such as trapping and crushing of the finger is prevented.
[0015] The objects are solved by the features of the independent claim. Preferred embodiments
are given in the dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and other objects, features and other advantages of the present invention
will be more clearly understood from the following detailed description when taken
in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view illustrating configuration of an exemplary embodiment
of the refrigerator according to the present invention;
FIG. 2 is a sectional view of the refrigerator illustrating a state of a container
moved upward by a raising/lowering device according to the embodiment of the present
invention;
FIG. 3 is a partial sectional view illustrating a state of a lower drawer moved forward
according to the embodiment of the present invention;
FIG. 4 is a partial sectional view illustrating a state of the container moved upward
by the raising/lowering device according to the embodiment of the present invention;
FIG. 5 is an exploded perspective view illustrating components of a storage room of
the lower drawer according to the embodiment of the present invention;
FIG. 6 is a perspective view illustrating configuration of the raising/lowering device
according to the embodiment of the present invention;
FIG. 7 is a front view illustrating the configuration of the raising/lowering device
according to the embodiment of the present invention;
FIG. 8 is a right side view illustrating the configuration of the raising/lowering
device according to the embodiment of the present invention;
FIG. 9 is a perspective view illustrating configuration of a state of the raising/lowering
device from which a support plate is removed according to the embodiment of the present
invention;
FIG. 10 is a right side sectional view illustrating the configuration of the raising/lowering
device according to the embodiment of the present invention;
FIG.11 perspective view showing a driving device of an embodiment of the present invention;
FIG. 12 is a rear perspective view illustrating the configuration of each of the driving
device and the raising/lowering device according to the embodiment of the present
invention;
FIG. 13 is a front perspective view illustrating the configuration of each of the
driving device and the raising/lowering device according to the embodiment of the
present invention;
FIG. 14 perspective view showing a state of the raising/lowering device folded;
FIG. 15 is a sectional view illustrating a state of the raising/lowering device mounted
in the storage room according to the embodiment of the present invention;
FIG. 16 is a sectional view illustrating a state of the raising/lowering device lifted
upward while being mounted in the storage room according to the embodiment of the
present invention;
FIG. 17 is an exploded-perspective view illustrating configuration of an inner cover
separated from the storage room according to the embodiment of the present invention;
FIG. 18 is a perspective view illustrating detailed configuration of a main member
according to the embodiment of the present invention;
FIG. 19 is a right side sectional view illustrating the inner cover according to the
embodiment of the present invention;
FIG. 20 is a partial sectional view illustrating a state of the inner cover separated
into a front surface cover and upper surface cover according to the embodiment of
the present invention;
FIG. 21 is an exploded sectional view illustrating detailed configuration of each
of the front surface cover and the upper surface cover according to the embodiment
of the present invention;
FIG. 22 is a partial sectional view illustrating a state of an upper end of the inner
cover fastened to an upper end of the storage room according to the embodiment of
the present invention;
FIG. 23 is an enlarged sectional view illustrating a state of a lower end of the inner
cover mounted to a bottom surface of the storage room according to the embodiment
of the present invention;
FIG. 24 is a partial cut sectional view illustrating an installation state of each
of the front surface cover and a bump according to the embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0017] Hereinbelow, the refrigerator according to the present invention is illustrated.
That is, FIG. 1 is a perspective view of a refrigerator having an anti-loosening device
of a raising/lowering device thereof according to the present invention, and FIG.
2 is a sectional view of the refrigerator illustrating a state of a container moved
upward by a raising/lowering device according to the embodiment of the present invention.
[0018] As illustrated in these drawings, the refrigerator 1 is formed to have a predetermined
volume as a hexahedron as a whole and is provided with a storage chamber for storing
food therein.
[0019] Accordingly, as for an appearance of the refrigerator 1, the refrigerator includes:
a cabinet 10 provided with a space including the storage chamber therein and an open
surface thereof (a front thereof); and at least one door 20 covering the open surface
(the front) of the cabinet 10. A cooling device (not shown) is provided in the refrigerator
1 to cool the storage chamber.
[0020] Referring to FIG. 1, the cabinet 10 of the refrigerator 1 is configured such that
the front thereof is open, and the door 20 covers the front of the cabinet 10. An
inner part of the cabinet 10 is preferably partitioned into multiple spaces. That
is, a space of the storage chamber provided in the cabinet 10 is divided by at least
one inner wall 30. In the present invention, the space is divided into upper and lower
spaces by the parallel inner wall 30.
[0021] That is, the cabinet 10 includes an upper space 32 on an upper side thereof and a
lower space 34 provided on a lower side thereof relative to the inner wall 30. Preferably,
the upper space 32 is used as a refrigerating compartment and the lower space 34 is
used as a freezer compartment.
[0022] Of course, a role of the upper space 32 and a role of the lower space 34 may be exchanged,
all of the upper space 32 and the lower space 34 may be used as a refrigerating compartment,
or all of the upper space 32 and the lower space 34 may be used as a freezer. Accordingly,
the upper space 32 and the lower space 34 may be designed to be used as a freezer
or a refrigerating compartment and may be designed to be used for other purposes when
required.
[0023] The door 20 may be provided as a swinging type door or a drawer moving forward and
backward.
[0024] In the embodiment of the present invention, the upper space 32 includes a swinging
door 22, and the lower space 34 includes drawers 24 and 26.
[0025] In addition, the lower space 34 is divided into two inner spaces, and the two drawers
24 and 26 are arranged horizontally in the two spaces, respectively. Accordingly,
of the drawers 24 and 26, the drawer covering an upper space is an upper drawer 24
and the drawer covering a lower space is a lower drawer 26.
[0026] Of course, as for the configuration of the door 20 described above, the number of
the doors may be variously changed depending on an inner space of the cabinet 10,
and the doors may be provided entirely as the swinging doors 22 or entirely as the
drawers 24 and 26.
[0027] The drawers 24 and 26 may be configured to be automatically moved forward or backward
by an opening/closing device 100. In addition, such drawers 24 and 26 arc provided
with the raising/lowering device 200, which will be described hereinbelow, such that
the container 40 provided therein is automatically moved upward and downward.
[0028] Furthermore, a portion or all of the drawers 24 and 26 may be configured to automatically
move forward and backward. That is, all of the upper drawer 24 and the lower drawer
26 may be configured to automatically move forward and backward, or the upper drawer
24 may be configured to manually move forward and backward and the lower drawer 26
may be configured to automatically move forward and backward.
[0029] In the present invention, the upper drawer 24 is configured to manually move forward
and backward, and only the lower drawer 26 is automatically moved forward and backward
by the opening/closing device 100. The container 40 is configured to be automatically
moved upward and downward by the raising/lowering device 200, which will be described
hereinbelow.
[0030] The opening/closing device 100 is provided to have a rack-pinion structure and forces
the drawer 26 to move forward and backward (to opposite sides of FIG. 2).
[0031] More particularly, a rack 110 is provided on a lower surface of the lower drawer
26 and the pinion 120 meshing with the rack 110 by gear engagement is rotatably provided
in a bottom surface of the refrigerator 1.
[0032] In addition, a motor 130 is provided on a bottom surface of the refrigerator 1 and
supplies a rotational force to the pinion 120.
[0033] Accordingly, when the motor 130 generates the rotational force by using power supplied
from the outside, the pinion 120 is rotated clockwise or counterclockwise by the rotational
force. Accordingly, the lower drawer 26 combined with the rack 110 moves forward and
backward (to the opposite sides of FIG. 2).
[0034] The rack 110 may be configured to be a double rack. That is, to allow the lower drawer
26 to be sufficiently opened to the outside, the rack 110 may be configured as a double
rack having at least two racks.
[0035] Meanwhile, the refrigerator 1 includes a button 50 to control the lower drawer 26
such that the lower drawer 26 is automatically opened or closed. That is, as illustrated
in FIG. 1, the button 50 is provided on a front surface of a lower end of the swinging
door 22 in the refrigerator 1, and the lower drawer 26 is configured to be opened
or closed by a user pressing the button.
[0036] Of course, the button 50 may be provided on a front surface of the lower drawer 26
or may be provided on various parts such as a front surface or side surface of the
refrigerator 1.
[0037] The drawer 26 includes a storage room 27 having a containing space or receiving the
container 40 therein and a front panel 28 provided at a front (a right side of FIG.
2) of the storage room 27 to be integrated therewith so as to constitute an outer
surface of the front.
[0038] In addition, the refrigerator 1 includes a machine room 60 provided at a lower rear
side thereof. A compressor and a condenser performing a refrigeration cycle may be
arranged in the machine room 60.
[0039] In FIGS. 3 and 4, a state of the lower drawer 26 of the drawers 24 and 26, which
is completely opened forward (to a left side of FIG. 3), is illustrated. That is,
as illustrated in FIG. 3, the lower drawer 26 is completely opened forward, and the
raising/lowering device 200 does not operate yet, and as illustrated in FIG. 4, while
the lower drawer 26 is completely opened forward, the container 40 is moved upward
by the raising/lowering device 200.
[0040] As illustrated in these drawings, the lower drawer 26 is moved forward (to a left
side of FIGS. 3 and 4) by a forward moving control by the button 50. In this case,
the forward movement of the lower drawer 26 is performed by the opening/closing device
100.
[0041] Such a lower drawer 26 is not configured to be opened and closed by a manual manipulation
of a user, but preferably, the lower drawer 26 is automatically opened and closed
by a manipulation of a user pressing the button 50. That is, when a user presses the
button 50, the rotational force is generated by the motor 130, and the pinion 120
is rotated counterclockwise by the rotational force.
[0042] Accordingly, when the pinion 120 is rotated counterclockwise, the rack 110 meshing
with the pinion 120 is moved to the left, and an entirety of the lower drawer 26 to
which the rack 110 is fixed moves to the left and is open.
[0043] Preferably, a distance which the lower drawer 26 moves to be open to the left is
a length allowing the container 40 received into the storage room 27 to be completely
exposed to the outside from the front surface of the refrigerator 1. That is, the
lower drawer 26 is required to be sufficiently opened such that a user takes out the
container 40, or takes out or stores food in the container 40.
[0044] In addition, the container 40 is moved upward by the raising/lowering device 200
provided at a lower side of the container 40. Even in this case, the lower drawer
26 is required to be sufficiently opened such that the container 40 does not hit the
front surface of the refrigerator 1, that is, a lower end of a front surface of the
upper drawer 24.
[0045] Accordingly, to allow the lower drawer 26 to be sufficiently removed forward, the
structure having the pinion 120 and the rack 110 may include the double rack structure.
[0046] Whether the lower drawer 26 is sufficiently open is determined by an open/close detecting
means 150.
[0047] The open/close detecting means 150 detects whether the lower drawer 26 is sufficiently
open to the outside (the left side of FIG. 3), and preferably includes permanent magnets
152 and 154, and a detection sensor 156.
[0048] The permanent magnets 152 and 154 are fixed to a left end (a front end of the lower
surface of the lower drawer) of the lower surface of the lower drawer 26 and a right
end thereof (a rear end thereof), respectively, and the detection sensor 156 is fixed
to a front end part of the bottom surface of the refrigerator 1.
[0049] Particularly, as illustrated in FIG. 3, the permanent magnets 152 and 154 include
a front end magnet 152 provided at the left end (the front end) of the lower surface
of the lower drawer 26 and a rear end magnet 154 provided at the right end (the rear
end) of the lower drawer 26.
[0050] Accordingly, when the front end magnet 152 is brought close to the detection sensor
156, the lower drawer 26 is recognized to be closed and when the rear end magnet 154
is brought close to the detection sensor 156, the lower drawer 26 is recognized to
be opened.
[0051] The detection sensor 156 may be various sensors such as a hall sensor or a lead switch.
[0052] The components of the open/close detecting means 150 may be installed at positions
contrary to the above-described positions. That is, the permanent magnets 152 and
154 are installed at the bottom surface of the refrigerator 1 and the detection sensor
156 may be installed at the lower drawer 26.
[0053] The container 40 of a shape of a rectangular container having an open upper part
is received in an inner space of the storage room 27 and the container 40 is configured
to be moved upward and downward by the raising/lowering device 200. Accordingly, the
raising/lowering device 200 is configured to be installed under the container 40 so
as to support the container 40.
[0054] Meanwhile, a rear side of the inner space of the storage room 27 (right sides of
FIGS. 3 and 4) is covered by an inner cover 300.
[0055] As illustrated in FIGS. 3 and 4, the inner cover 300 is installed to have a section
of an "L" shape as a whole and covers the remaining rear end space of the inner space
of the storage room 27 except for a space corresponding to an occupying space of the
container 40 in the inner space thereof.
[0056] Accordingly, the rear end space in the storage room 27 is covered by the inner cover
300, whereby a neat appearance is provided to a user and a hand of the user is prevented
from being trapped therein.
[0057] As illustrated in FIG. 3, when the forward movement of the lower drawer 26 is completed,
then the raising/lowering device 200 operates and the container 40 is moved upward.
That is, the raising/lowering device 200 positioned under the container 40 operates
and the container 40 is lifted to an upper side of the storage room 27. Accordingly,
in FIG. 4, a state of the container 40 completely moved upward by the raising/lowering
device is illustrated.
[0058] A driving device 400 is provided in the front panel 28 of the lower drawer 26 and
controls operation of the raising/lowering device 200. That is, a vertical height
of the raising/lowering device 200 is changed such that a distance between an upper
surface and a lower surface of the raising/lowering device increases or decreases.
Accordingly, the raising/lowering device 200 moves the container 40 at an upper side
thereof upward and downward, and the operation of the raising/lowering device 200
is controlled by the driving device 400.
[0059] The raising/lowering device 200 is configured to be folded or unfolded in an upper
end and lower end thereof, and when the raising/lowering device is not used, volume
thereof is minimized, so the raising/lowering device 200 is preferably received in
the storage room 27. That is, the raising/lowering device 200 may be configured to
have a scissor type link structure in which the height of the raising/lowering device
200 is minimized during the folding of the raising/lowering device 200 and the height
of the raising/lowering device 200 is maximized during the unfolding of the raising/lowering
device 200.
[0060] When a folded state of the raising/lowering device 200 is detected while the lower
drawer 26 is completely removed and the raising/lowering device 200 is also completely
lowered, the driving device 400 operates and allows the raising/lowering device 200
to unfold.
[0061] Accordingly, preferably, an additional raising/lowering detection means is provided
in the front panel 28, in the driving device 400, or in an area adjacent thereto and
detects whether the raising/lowering device 200 is folded or unfolded. Of course,
due to the upward or downward moving position of the container 40 detected, the folding
or unfolding of the raising/lowering device 200 may also be determined.
[0062] In FIG. 5, an exploded perspective view of components provided in the storage room
27 is illustrated.
[0063] As illustrated in FIG. 5, the storage room 27 is configured to have the containing
space of a predetermined size therein so as to constitute an outer surface thereof.
The storage room 27 is provided with the raising/lowering device 200 therein such
that the container 40 or food is moved upward and downward.
[0064] In addition, the inner cover 300 is provided in the storage room 27 so as to cover
the rear end part of the inner part of the storage room 27 and to partition the inner
space of the storage room 27.
[0065] The storage room 27 may be formed of plastic materials by injection molding to have
an entire shape thereof. The storage room 27 has a shape of a basket having an open
upper surface to have a space therein to allow food to be stored.
[0066] A rear surface of the storage room 27 is configured to be an inclined surface and
the storage room 27 is preferably prevented from being interfered with by the machine
room 60 provided at the lower rear side of the refrigerator 1.
[0067] An outer side plate 27a is provided on each of opposite surfaces of outer sides of
the storage room 27. The outer side plate 27a is installed on each of the opposite
surfaces of the storage room 27 to constitute outer surfaces thereof.
[0068] Furthermore, the outer side plate 27a also functions such that components such as
a door frame (not shown) mounted to each of opposite sides of a drawer body 38 and
the rack 110 constituting the opening/closing device 100 are not exposed to the outside.
[0069] The inner cover 300 is provided to divide the inner part of the storage room 27 into
a front space and a rear space.
[0070] Accordingly, the inner cover 300 covers the rear space of the inner space of the
storage room 27 so as to allow only the inner space of a front of the storage room
to be exposed to the outside. That is, in the inner part of the storage room 27, only
the front space at which the raising/lowering device 200 is arranged is exposed to
the outside and the rear space is covered by the inner cover 300.
[0071] The inner cover 300 includes a front surface cover 310 and an upper surface cover
320. The front surface cover 310 is formed in a step shape and partitions an inside
space of the storage room 27 into a front space and a rear space, and the upper surface
cover 320 is rotatably connected to an upper end of the front surface cover 310 and
covers a rear upper surface of the front surface cover 310.
[0072] That is, as illustrated in the drawings, the inner cover 300 includes the front surface
cover 310 forming a vertical surface and the upper surface cover 320 formed horizontally
by extending and rearward from the upper end of the front surface cover 310. In addition,
the upper surface cover 320 is preferably connected to the upper end of the front
surface cover 310 to be rotatable.
[0073] In addition, preferably, the front surface cover 310 includes an upper end portion
312, a step surface 314, and a lower end portion 316. The upper end portion 312 is
provided on the upper end of the front surface cover 310 to allow the upper surface
cover 320 to be rotatably connected thereto, the step surface 314 is formed by being
bent perpendicularly forward from a lower end of the upper end portion 312 and extending,
and the lower end portion 316 is formed by being bent perpendicularly downward from
an end of the step surface 314 and extending.
[0074] Accordingly, the front surface cover 310 has the step shape lower end portion, and
the step shape portion functions to prevent a user's finger from being inserted into
a lower side of the drawer through a gap between the raising/lowering device 200 and
the front surface cover 310.
[0075] An outer surface of the inner cover 300 may be preferably made of a metal material
as the outer side plate 27a. This is to allow a user to feel the texture of metal
and create aesthetic qualities and have rigidity since the inner cover 300 is a part
seen during the forward movement of the lower drawer 26 by the user.
[0076] A front surface and side surfaces of the storage room 27 may also be made of a metal
material. Accordingly, when each part of the storage room 27 is made of the metal
material, inner sides of the containing space of the storage room 27 may entirely
have the feel of metal, food stored therein may be stored to be entirely and evenly
cold, and visually aesthetic qualities may be created for a user.
[0077] The raising/lowering device 200 sits in the inner part of the storage room 27.
[0078] The raising/lowering device 200 has a structure of being vertically moved upward
and downward by the driving device 400 connected thereto, which will be described,
and preferably, opposite sides of the raising/lowering device move upward and downward
at the same rate
[0079] To combine the raising/lowering device 200 with the driving device 400, a connection
hole 27b is provided at each of lower opposite sides of the front surface of the storage
room 27 by being formed therethrough in a front to rear direction of the front surface.
[0080] The connection hole 27b is a part into which the scissor side connection part 250
provided at the front end of the raising/lowering device 200 is inserted to be received
therein. Accordingly, a radius of the connection hole 27b is preferably configured
to be the same as or larger than a radius of the scissor side connection part 250.
[0081] In FIGS. 6 to 10, the configuration of the raising/lowering device 200 is illustrated.
That is, in FIG. 6, a perspective view of configuration of the raising/lowering device
is illustrated, and in FIGS. 7 and 8, a front view and a right side view of the raising/lowering
device 200 are illustrated. In addition, in FIG. 9, a perspective view of a state
of the raising/lowering device 200 from which a support plate 210 is removed is illustrated,
and in FIG. 10, a right side sectional view of the raising/lowering device 200 is
illustrated.
[0082] As illustrated in the drawings, the raising/lowering device 200, which is configured
to be a scissor type, is folded when the raising/lowering device is lowered and is
unfolded when the raising/lowering device is raised such that the container 40 or
food seated on the upper surface thereof is moved upward and downward.
[0083] In addition, the raising/lowering device 200 is provided with the support plate 210
thereon. That is, as illustrated in the accompanying drawings, the support plate 210
is provided on an upper end of the raising/lowering device 200 to allow the container
40 laid on an upper side thereof to be efficiently seated.
[0084] The support plate 210, which constitutes an outer surface of the upper surface of
the raising/lowering device 200, is configured to have a predetermined thickness and
may be made of a metal such as a stainless material to be aesthetic, and is preferably
configured such that an inner part of the support plate is depressed so as to allow
the container 40 to be efficiently seated and fixed.
[0085] The raising/lowering device 200 may be provided on an inner bottom of the storage
room 27 and, preferably, is removably provided at an inner side of the storage room
27.
[0086] The raising/lowering device 200 includes the upper frame 220 provided at the upper
side thereof, a lower frame 230 provided under the upper frame 220, and a pair of
scissor assemblies 240 arranged between the upper frame 220 and the lower frame 230.
[0087] As illustrated in the drawings, the upper frame 220 is configured to have a rectangular
frame shape, and the support plate 210 sits on and is fixed to an upper surface of
the upper frame 220.
[0088] The upper frame 220 of the raising/lowering device 200 moves in upward and downward
directions and substantially supports food or the container 40 together with the support
plate 210.
[0089] The upper frame 220 may be configured to have a metal plate shape, and edges thereof
are partially bent downward. Accordingly, the upper frame 220 is preferably configured
to define a space to house each of the scissor assemblies 240 in cooperation with
the lower frame 230.
[0090] The lower frame 230 is provided under the upper frame 220 and sits on a bottom surface
of the storage room 27. Furthermore, the lower frame 230 is preferably configured
to have a shape corresponding to a shape of the upper frame 220.
[0091] The lower frame 230 may also be configured to have a metal plate shape as the upper
frame 220, and edges thereof are bent upward. Accordingly, the lower frame 230 is
preferably configured to define the space to house each of the scissor assemblies
240 together with the upper frame 220.
[0092] The raising/lowering device 200 is configured to be unfolded or folded upward and
downward by the scissor assemblies 240. Accordingly, to allow the raising/lowering
device 200 to be folded, a locking means 500 is required.
[0093] The locking means 500 allows the lower frame 230 and the upper frame 220 to be brought
close to each other to vertically fold the raising/lowering device 200 such that a
vertical length of the locking means is minimized.
[0094] Accordingly, the locking means 500 includes the upper locking means 510 provided
in the upper frame 220 and the lower locking means 520 provided in the lower frame
230.
[0095] More particularly, the lower locking means 520 is provided at a middle of the lower
frame 230. The lower locking means 520 functions to allow the upper frame 220 and
the lower frame 230 to be not randomly separated from each other and to be in a state
of restricting each other when the raising/lowering device 200 is removed from the
storage room. That is, the lower locking means 520 allows the scissor assemblies 240
to maintain the folded state thereof without unfolding.
[0096] The lower locking means 520 includes a locking means casing 522 fixed to the middle
of the lower frame 230, a lower hook 530 moving in the locking means casing 522, and
a force applying member 524 applying a unidirectional force to the lower hook 530.
[0097] More particularly, the lower locking means 520 is provided at the middle of an upper
surface of the lower frame 230 by protruding upward therefrom.
[0098] In addition, as illustrated in FIG. 10, the locking means casing 522 is configured
to have a predetermined front to rear length (to opposite sides of FIG. 10) and a
hook space 526 having volume of a predetermined size is provided in the locking means
casing 522.
[0099] The lower hook 530 includes a hook body 532 having a predetermined vertical height,
a support end 534 provided at a lower end of the hook body 532 to support the hook
body 532, and a hook end 536 protruding by extending forward from an upper end of
the hook body 532.
[0100] The hook body 532 is configured to have the predetermined vertical height and a hook
hole 532a is provided in an upper surface of the locking means casing 522 by being
vertically formed therethrough. That is, the hook hole 532a having a predetermined
front to rear length is provided in the upper surface of the locking means casing
522 by being vertically formed therethrough, and the hook body 532 is arranged by
vertically passing through the hook hole 532a.
[0101] The hook body 532 is configured such that an inner part thereof is hollow and a lower
part thereof is open. That is, the inner part of the hook body 532 is hollow and the
lower part thereof is open to have a protrusion groove 532b. A spacing protrusion
27c, which will be describe hereinbelow, is received in the protrusion groove 532b.
[0102] More particularly, a front to rear thickness of the hook body 532 is configured to
gradually decrease toward the upper end of the hook body. More preferably, as illustrated
in FIG. 10, at least a rear surface (a right surface of the hook body of FIG. 10)
of the hook body 532 is configured to be gradually inclined so as to be positioned
at a further rear side toward a lower side thereof.
[0103] The front to rear length of the hook hole 532a is configured to have a size larger
than a size of the thickness of the hook body 532 provided to pass through the hook
hole 532a. Accordingly, the hook body 532 is allowed to move a predetermined distance
forward and backward while the hook body 532 is received in the hook hole 532a.
[0104] As illustrated in FIG. 10, the support end 534 is configured to extend forward and
backward (to opposite sides of FIG. 10) at a lower end of the hook body 532 and vertically
extend therefrom and is a part moving forward and backward (to the opposite sides
of FIG. 10) in the locking means casing 522.
[0105] The hook end 536 is provided to protrude by a predetermined portion by perpendicularly
bending to a front (a left side of FIG. 10) of the hook body 532 from the upper end
thereof and has a shape corresponding to a shape of an upper hook end 514 of the upper
locking means 510, which will be described hereinbelow.
[0106] The force applying member 524 is provided in the locking means casing 522 and functions
to pull the lower hook 530 forward (to the left side of FIG. 10). More particularly,
the force applying member 524 is configured as a tension spring and functions to pull
the lower hook 530 forward by tensile elasticity.
[0107] A front of the force applying member 524 is connected to a front surface of an inner
side of the locking means casing 522 and a rear end of the force applying member is
connected to a front end of the support end 534.
[0108] Of course, the force applying member 524 may be made of various materials as long
as the force applying member has function of pushing or pulling the lower hook 530
forward by the elasticity. For example, the force applying member 524 may be provided
as an elastic spring and installed at a rear side of the support end 534 to push the
lower hook 530 forward by an elastic force.
[0109] The upper frame 220 includes the upper locking means 510 provided on a middle portion
of a lower surface of the upper frame.
[0110] As illustrated in the accompanying drawings, the upper locking means 510 is provided
by protruding downward from the lower surface of the upper frame 220 and has a shape
corresponding to a shape of the lower hook 530 such that the upper locking means and
the lower hook are engaged with each other. That is, a lower end of the upper locking
means 510 is bent perpendicularly rearward (to the right side of FIG. 10), thereby
being held by the hook end 536 of the lower hook 530.
[0111] Meanwhile, the raising/lowering device 200 is required to freely fold and unfold,
but when the raising/lowering device 200 is removed upward from the storage room,
the raising/lowering device 200 is required to maintain the folded state thereof.
That is, the raising/lowering device 200 is required to unfold when the container
40 sits on an upper side of the raising/lowering device 200 to be moved upward and
downward. However, when the raising/lowering device 200 is removed to the outside
since the raising/lowering device is not used, the raising/lowering device 200 is
required to be removed upward with the raising/lowering device folded.
[0112] Accordingly, the anti-loosening device is provided to allow the raising/lowering
device 200 to be rotated relative to the front end thereof such that the folded state
of the raising/lowering device 200 is maintained when the raising/lowering device
200 is moved upward and removed from the storage room.
[0113] Such an anti-loosening device preferably includes the locking means 500 preventing
the raising/lowering device 200 from unfolding and a handle 215, which will be described
hereinbelow. That is, apart from the locking means 500, the handle 215 configured
to be held by a user is provided at each of rear end parts of opposite side edges
of the raising/lowering device 200 so as to allow the raising/lowering device 200
to be rotated relative to the front end thereof.
[0114] Accordingly, when a user holds and lifts the handle 215 provided at the rear end
part of the raising/lowering device 200, the raising/lowering device 200 is naturally
rotated relative to the front end thereof. Accordingly, the lower locking means 520
escapes from the spacing protrusion 27c, which will be described hereinbelow, and
the folded state of the raising/lowering device 200 is maintained by the locking means
500.
[0115] The scissor assemblies 240 are provided at opposite sides of the upper frame 220
and the lower frame 230 relative to a middle of each of the upper frame and the lower
frame.
[0116] Preferably, each of the scissor assembly 240 is axially coupled to the upper frame
220 and the lower frame 230. Accordingly, the upper frame 220 may move upward and
downward according to the movement of the scissor assembly 240.
[0117] Each of the pair of scissor assemblies 240 provided at the opposite sides is different
only in an installation position and is exactly the same in a structure and shape
thereof. That is, as illustrated in the accompanying drawings, the distance between
the upper frame 220 and the lower frame 230 is decreased or increased by the movement
of the scissor assembly 240 having an "X" shape as a whole at each of the opposite
sides.
[0118] The scissor assembly 240 includes a plate-shaped plate unit 242 and a rod unit 244
axially coupled to intersect with the plate unit 242.
[0119] Preferably, the plate unit 242 is rotatably mounted to the lower frame 230. That
is, the plate unit 242 is rotatably installed at each of opposite ends of the lower
frame 230.
[0120] The rod unit 244 is rotatably connected to the upper frame 220. That is, preferably,
the rod unit 244 is rotatably installed at each of opposite ends of the upper frame
220.
[0121] The plate unit 242 may be configured to be a rectangular plate shape and be made
of aluminum alloy materials. Accordingly, the plate unit may be formed to have high
rigidity and be light, and may also be formed by die casting.
[0122] The plate unit 242 includes the scissor side connection part 250 provided at a lower
end thereof by protruding therefrom. That is, the scissor side connection part 250
is provided at a front end of the plate unit 242 by further protruding forward to
be integrated with the plate unit.
[0123] The rod unit 244 is preferably installed to intersect the plate unit 242. That is,
the rod unit 244 and the plate unit 242 unfold to have an "X" shape (as viewed from
a front thereof) by intersecting each other, and an intersecting shaft 246 is provided
at a center portion at which the rod unit 244 and the plate unit 242 intersect each
other such that the rod unit 244 and the plate unit 242 rotatably intersect each other.
[0124] Ends of the rod unit 244 and the plate unit 242 are in contact with the lower surface
of the upper frame 220 and the upper surface of the lower frame 230 and accordingly,
the rod unit 244 and the plate unit 242 are preferably configured to slidably move.
[0125] Particularly, a lower end (in FIG. 6) of the plate unit 242 is rotatably mounted
to the lower frame 230 and an upper end of the plate unit 242 is installed on the
lower surface of the upper frame 220 to slidably move. Accordingly, an upper moving
guide 252 is provided on the lower surface of the upper frame 220 to have a predetermined
length to opposite sides thereof and is in contact with the upper end of the plate
unit 242 to guide the plate unit such that the plate unit slidably moves. Preferably,
a roller rotating along the upper moving guide 252 is provided at the upper end of
the plate unit 242.
[0126] An upper end (in FIG. 6) of the rod unit 244 is rotatably mounted to each of the
opposite ends of the upper frame 220, and a lower end of the rod unit 244 is slidably
installed on the upper surface of the lower frame 230.
[0127] Accordingly, a lower moving guide 254 is installed on the upper surface of the lower
frame 230 to have a predetermined length to opposite sides thereof and is in contact
with the lower end of the rod unit 244 so as to guide a sliding movement of the rod
unit. A roller rotating along the lower moving guide 254 may be provided at the lower
end of the rod unit 244.
[0128] Meanwhile, a rear end hook 260 of a hook shape is provided at a rear end (a right
end of FIGS. 8 and 10) of the lower frame 230 by extending backward, and a cover piece
270 is provided at a rear end of the support plate 210 by extending backward therefrom
to prevent a user's finger being trapped.
[0129] The rear end hook 260 is held by a lower end of the inner cover 300 and the cover
piece 270 covers a gap between the raising/lowering device 200 and the inner cover
300.
[0130] In addition, the handle 215, which will be described hereinbelow, is preferably provided
at each of rear end parts of the opposite side edges of the support plate 210.
[0131] FIG. 11 is a perspective view illustrating configuration of a driving device 400,
and FIGS. 12 and 13 are a rear perspective view and a front perspective view, respectively,
illustrating a state at which the driving device 400 and the raising/lowering device
200 are connected to each other.
[0132] As illustrated in these drawings, the driving device 400 is preferably arranged in
the front panel 28 and is connected to the raising/lowering device 200 provided at
a rear side thereof. Accordingly, power generated by the driving device 400 is transmitted
to the raising/lowering device 200.
[0133] The driving device 400 transmits power simultaneously to the opposite sides of the
raising/lowering device 200. Accordingly, preferably, the raising/lowering device
200 moves upward and downward in parallel in the opposite sides thereof without slanting.
[0134] The driving device 400 includes a motor assembly 410, a screw unit 420 arranged at
each of opposite sides of the motor assembly 410 to have a pair of screw units, and
a lever 430 connected to each of the screw units 420 to have a pair of levers.
[0135] In addition, the screw unit 420 includes a screw 422 and the screw holder 424, through
which the screw 422 passes, moving upward and downward along the screw 422.
[0136] A lever connection part 432 is provided at an end of the lever 430 and the lever
connection part 432 is rotatably fixed to a rear surface of the front panel 28. The
lever connection part 432 is combined with the scissor side connection part 250.
[0137] A lever hole 434, into which a holder engaging member 440 is locked, may be provided
in an inner end of each of the pair of the levers 430.
[0138] The lever hole 434, which is configured to be a longitudinal hole, guides movement
of the holder engaging member 440 and at the same time allows the holder engaging
member 440 to be engaged with the screw holder 424. Accordingly, the lever 430 is
rotated by the screw holder 424 moving upward and downward during rotation of the
screw 422.
[0139] The motor assembly 410 is positioned at a middle portion of the front panel 28.
[0140] A drive motor 412 is provided in the motor assembly 410 and the screw units 420 and
the levers 430 of the opposite sides of the motor assembly 410 are operated by the
motor assembly 410 including the drive motor 412.
[0141] The motor assembly 410 allows speed reduction and a magnitude of a transmitted force
to be adjusted by combination of multiple gears. In addition, the motor assembly 410
has a structure of having the drive motor 412 and the gears vertically arranged so
as to minimize a recessed space of the front panel when the motor assembly 410 is
installed in the front panel 28. Particularly, to minimize a thickness of the motor
assembly 410, a width of opposite side directions thereof is preferably configured
to be wide and a thickness of forward and backward directions thereof is configured
to be minimized.
[0142] In addition, the drive motor 412 constituting the motor assembly 410 preferably protrudes
to the storage room 27 so as to allow a recessed depth of the front panel 28 to be
minimized such that a thermal insulation performance of the front panel is guaranteed.
[0143] The drive motor 412 provides power to the raising/lowering device 200 such that the
raising/lowering device 200 is moved upward and downward and is preferably configured
to rotate clockwise/counterclockwise. Accordingly, when an upward or downward moving
signal of the raising/lowering device 200 is input, the drive motor 412 rotates clockwise
or counterclockwise and provides power to the raising/lowering device 200 so that
the raising/lowering device is moved upward and downward. Furthermore, the drive motor
412 is preferably stopped at the input of a stop signal by a load thereof or detection
of a sensor.
[0144] The motor assembly 410 includes the drive motor 412, a motor casing 414 in which
the drive motor 412 is installed, and a motor cover 416 with which the motor casing
414 is combined and covers the drive motor 412.
[0145] A rotating shaft of the drive motor 412 may protrude from the motor casing 414 toward
a side opposite to a side of the motor cover 416. Furthermore, the motor assembly
410 may further include a power transmission part to transmit the power of the drive
motor 412.
[0146] The power transmission part may be positioned at a side opposite to a side of the
drive motor 412 relative to the motor casing 414.
[0147] The power transmission part is configured by the combination of the multiple gears
and is covered by a cover member 450 mounted at a side (a front of the motor casing)
opposite to the side of the drive motor 412.
[0148] The power transmission part includes a drive gear 452 connected to the shaft of the
drive motor 412 passing through the motor casing 414, a first transmission gear 454
provided at a lower side of the drive gear 452 to mesh therewith, a second transmission
gear 456 meshing with the first transmission gear 454, a third transmission gear 458
meshing with the second transmission gear 456, and a pair of cross gears 460 meshing
with the third transmission gear 458.
[0149] In addition, as illustrated in FIG. 14, the second transmission gear 456 meshing
with the first transmission gear 454 is preferably configured as a multi-stage gear
to mesh with the upper and lower gears each other.
[0150] The cross gears 460 are configured to include spur gears and helical gears.
[0151] That is, a first helical gear part (not shown) is provided at a rear of each of the
cross gears 460 configured to have a spur gear shape, and the first helical gear part
meshes with a second helical gear part 464 of a side of each of the cross gears.
[0152] A rotation center line of the second helical gear part 464 is arranged to intersect
a rotation center line of the cross gear 460. Accordingly, the first helical gear
part (not shown) and the second helical gear part 464 are combined with each other
in a state intersecting with each other and are configured to be engaged with each
other so as to allow rotations thereof to be transmitted to each other.
[0153] The rotation center line of the cross gear 460 extends in a front to rear direction
thereof and the rotation center line of the second helical gear part 464 extends in
an inclined vertical direction. Furthermore, as illustrated in FIG. 14, each of the
rotation center lines of the second helical gear parts 464 arranged at the opposite
sides of the cross gears is arranged to be inclined in a direction gradually moving
away from each other upward.
[0154] The screw unit 420 is arranged at each of the opposite sides of the motor assembly
410.
[0155] The screw unit 420 is arranged at each of the opposite sides of an inner side of
the front panel 28 and each of the pair of the screw units 420 is different only in
an installation position thereof, but is the same in a structure and shape thereof.
[0156] The power of the drive motor 412 is transmitted to a lower part of the screw unit
420. Each of the screw units 420 of the opposite sides is configured to be symmetrical
to each other relative to the motor assembly 410.
[0157] Accordingly, the motor assembly 410 may be arranged between the screw units 420 positioned
at the opposite sides, and each of the screw units 420 arranged at the opposite sides
is arranged to have a shorter distance therebetween toward a lower end thereof from
an upper end thereof.
[0158] The screw unit 420 includes the screw 422 rotated by receiving the power of the drive
motor 412, wherein the screw 422 extends in upward and downward directions and is
configured to be inclined such that an upper end thereof faces an outside thereof
and a lower end thereof faces an inside thereof.
[0159] The screw 422 is connected to the second helical gear part 464. Accordingly, the
screw 422 rotates together with the second helical gear part 464 during rotation thereof.
[0160] The screw unit 420 is provided with the screw holder 424 through which the screw
422 passes to be combined therewith, wherein the screw holder 424 moves upward and
downward along the screw 422 during rotation of the screw 422.
[0161] In addition, since the lever 430 is combined with the screw holder 424, the lever
430 rotates during movement of the screw holder 424.
[0162] Accordingly, during the rotation of the screw 422, the screw holder 424 moves along
the screw 422.
[0163] In addition, a magnet may be provided in the screw holder 424.
[0164] The magnet is provided such that a position of the screw holder 424 is detected and
when the screw holder 424 is positioned at a lowest end or a top end of the screw
422, the raising/lowering detection means (not shown) detects this. That is, completion
of an upward or downward movement of the raising/lowering device can be determined
by whether the magnet installed in the screw holder 424 is detected.
[0165] The lever 430 connects the screw holder 424 with the raising/lowering device 200
and each of opposite sides of the lever is combined with each of the screw holder
424 and the raising/lowering device 200.
[0166] The screw unit 420 may further include a housing 426 receiving the screw unit 420.
[0167] The housing 426 constitutes an outer surface of the screw unit 420 and includes a
space in which the screw unit 420 and the screw holder 424 are received.
[0168] The housing 426 may be formed by bending a plate shaped metal material or may be
formed of a plastic material.
[0169] The housing 426 is provided with at least one guide bar 428 to guide lifting of the
screw holder 424. The at least one guide bar 428 extends in parallel with the screw
422 while being spaced apart from the screw 422.
[0170] A plurality of guide bars 428 are provided in the housing 426 such that the screw
holder 424 is not displaced to any side of a left or right side relative to the screw
422, and the screw 422 is preferably positioned between the plurality of guide bars
428.
[0171] The motor casing 414 and a pair of housings 426 may be provided to be integrated
with each other. Furthermore, a single cover member 450 may cover the motor casing
414 and the pair of housings 426. That is, the cover member 450 is combined with the
motor casing 414 to cover the power transmission part, and is combined with the pair
of housings 426 to cover the screw 422, the guide bars 428, and the screw holder 424.
[0172] Since the driving device 400 exists as a module, the driving device 400 becomes compact
and thus the driving device 400 can be easily installed in the front panel 28.
[0173] FIG. 14 is a perspective view of a state of the raising/lowering device folded according
to the embodiment of the present invention;
[0174] As illustrated in FIG. 15, the support plate 210 constitutes an upper outer surface
of the raising/lowering device 200.
[0175] In addition, the support plate 210 is a rectangular flat plate as a whole, and each
of edges thereof protrudes upward to have a predetermined height. Accordingly, the
upper surface of the support plate 210 is entirely formed such that an inner part
of each of the edges thereof is depressed, so that a lower end of the container 40
is easily seated.
[0176] The edges of the support plate 210 include a front edge 212 provided by protruding
upward from an upper surface of a front end thereof, side edges 214 provided by protruding
upward from opposite sides thereof, and a rear edge 216 provided by protruding upward
from an upper surface of a rear end thereof.
[0177] An upper end of the rear edge 216 extends backward to have the cover piece 270, and
as described above, the cover piece 270 covers the gap between the raising/lowering
device 200 and the inner cover 300 such that fingers of a user or a child are prevented
from being trapped in the gap.
[0178] Each of the side edges 214 is provided with the handle 215 at the rear end part thereof.
[0179] The handle 215 is a part held by fingers of a user when the user takes out the raising/lowering
device 200 from the inner part of the storage room 27.
[0180] As illustrated in the drawings, the handle 215 is preferably configured to be recessed
from an inner surface of each of the pair of the opposite side edges 214 to an outer
side thereof. Accordingly, a user moves his/her fingers from a middle of the upper
surface of the support plate 210 to each of the pair of side edges 214, puts his/her
fingers in the recessed portion of the handle 215, and lifts the raising/lowering
device upward.
[0181] Accordingly, the raising/lowering device 200 rotates relative to the front end thereof
and the rear end part thereof is lifted upward.
[0182] FIG. 15 is a sectional view of a state of the raising/lowering device 200 mounted
in the storage room 27, and FIG. 16 is a partial sectional view illustrating a state
at which the raising/lowering device 200 mounted in the storage room 27 is lifted
upward.
[0183] First, as illustrated in FIG. 15, the raising/lowering device 200 sits on the bottom
surface of the inner part of the storage room 27. In this case, the scissor side connection
part 250 of the raising/lowering device 200 passes through the connection hole 27b
of the storage room 27 and accordingly, a front end of the scissor side connection
part 250 protrudes to the front (a left side of FIG. 15) of the storage room 27.
[0184] In addition, the lower hook 530 moves backward (a right side of FIG. 15) and is separated
from the upper locking means 510. Accordingly, the upper frame 220 and the lower frame
230 are not locked to each other in the folded state.
[0185] More particularly, the storage room 27 includes the spacing protrusion 27c provided
at a middle part thereof by protruding upward therefrom, and the lower hook 530 is
moved backward (the right side of FIG. 15) by the spacing protrusion 27c.
[0186] As illustrated in FIG. 16, the spacing protrusion 27c is preferably configured to
have a "Δ" shape having a pointed upper side. Particularly, although a front surface
(a left-side surface of FIG. 15) of the spacing protrusion 27c may be vertically configured,
a rear surface thereof (a right-side surface of FIG. 15) is required to be configured
slantingly.
[0187] This is because a rear end part of the protrusion groove 532b of the lower hook 530
is in a sliding contact with the rear surface of the spacing protrusion 27c therealong.
[0188] More particularly, the upper locking means 510 and the lower hook 530 of the raising/lowering
device 200 are engaged with each other to maintain the folded state thereof outside
of the storage room 27. Accordingly, when the raising/lowering device 200 of the folded
state is installed on the bottom surface from an upper part of the storage room 27,
the raising/lowering device 200 is brought into a close contact with the bottom surface
of the storage room 27 by weight.
[0189] Accordingly, in this case, the rear surface of the spacing protrusion 27c is in contact
with a rear end of a lower surface of the hook body 532 of the lower hook 530. As
the raising/lowering device 200 gradually lowers downward, the elasticity of the force
applying member 524 configured as the tension spring does not overcome a downward
moving force of the raising/lowering device 200, and accordingly, the rear end of
the lower surface of the hook body 532 of the lower hook 530 gradually slides along
the rear surface of the spacing protrusion 27c as illustrated in FIG. 15.
[0190] In this case, the spacing protrusion 27c is received in the protrusion groove 532b
provided in the hook body 532, and the lower hook 530 and the upper locking means
510 are spaced apart from each other and accordingly are not engaged with each other.
[0191] Accordingly, the spacing protrusion 27c is received in the protrusion groove 532b,
and the lower locking means 520 and the upper locking means 510 are separated from
each other such that the locking means 500 is unlocked. Accordingly, the raising/lowering
device 200 is in a state which can be unfolded.
[0192] Accordingly, to maintain the folded state of the raising/lowering device 200, the
spacing protrusion 27c is required to escape from the protrusion groove 532b.
[0193] As described above, to take out the raising/lowering device 200 upward while the
raising/lowering device 200 sits on the bottom surface of the storage room 27, the
handle 215 is lifted upward while the handle is held by each of the hands.
[0194] In this case, while the raising/lowering device 200 rotates counterclockwise relative
to the front end part thereof, the rear end part thereof (a right end of FIG. 15)
is lifted upward.
[0195] When the rear end part of the raising/lowering device 200 is moved upward, the rear
end of the lower surface of the hook body 532 of the lower hook 530 gradually is moved
upward by sliding along the rear surface of the spacing protrusion 27c.
[0196] When the rear end of the raising/lowering device 200 moves up, the raising/lowering
device 200 slants gradually. Since the force applying member 524 is the tension spring,
the force applying member continuously pulls the lower hook 524 forward. Accordingly,
the lower hook 524 moves forward while moving upward gradually and thus is engaged
with the upper locking means 510.
[0197] That is, as illustrated in FIG. 16, before the lower end of the lower hook 524 moves
away from the upper end of the spacing protrusion 27c, the lower hook 524 and the
upper locking means 510 are engaged with each other.
[0198] Accordingly, since the lower hook 524 of the lower locking means 520 and the upper
locking means 510 are engaged with each other when the rear end part of the raising/lowering
device 200 is lifted upward, the raising/lowering device 200 is maintained at the
folded state and the scissor side connection part 250 deviates from the connection
hole 27b of the storage room 27. Accordingly, the raising/lowering device 200 is completely
removed from the upper side of the storage room 27.
Meanwhile, FIG. 17 is an exploded-perspective view illustrating configuration of the
inner cover 300 separated from the storage room 27 according to the embodiment of
the present invention.
[0199] First, as described above, the inner cover 300 functions to cover the rear end portion
of the inner space of the storage room 27.
[0200] More particularly, the inner cover 300 is provided with the front surface cover 310
and the upper surface cover 320. The front surface cover 310 partitions the inner
space of the storage room 27 into the front space and the rear space and is formed
in a step shape, and the upper surface cover 320 is rotatably connected to the upper
end of the front surface cover 310 and covers the rear upper surface of the front
surface cover 310.
[0201] In addition, the front surface cover 310 is preferably provided with the upper end
portion 312, the step surface 314, and the lower end portion 316. The upper end portion
312 is provided for rotatable connection of the upper surface cover 320, the step
surface 314 is formed by being bent perpendicularly forward from the lower end of
the upper end portion 312 and extending, and the lower end portion 316 is formed by
being bent perpendicularly downward from the end of the step surface 314.
[0202] In addition, the inner cover 300 includes a main member 330 forming a frame of the
inner cover 300 and an exterior material 360 forming an exterior of the inner cover
300.
[0203] Preferably, the main member 330 is made of an injection molded article by injection
molding, and an entire shape thereof is molded in a '
' shape (shown from right side). In addition, the exterior material 360 is coupled
to each of a front surface and an upper surface of the main member 330 to form appearance
of the front and upper surfaces thereof.
[0204] Preferably, the exterior material 360 is formed of metal material or a clad material.
That is, the exterior material 360 is formed to cover the front and upper surfaces
of the main member 330 made of the injection molded article and functions to form
a neat appearance. Accordingly, the exterior material 360 is preferably formed of
a material that creates a luxurious texture.
[0205] The metal material is excellent in gloss and easy to be deformed and are frequently
used in household goods and interior products. In addition, in order to prevent a
disadvantage that the metal material rusts more than stainless steel and aluminum,
surfaces of the products may be coated or painted separately.
[0206] The clad material is advanced new materials that combine several different metals
together to take advantage of each metal. Among them, it is preferable to use a material
in which aluminum having excellent thermal conductivity, heat preservation rate, and
thermal efficiency is combined with stainless steel having excellent flame resistance,
acid resistance, alkali resistance, and corrosion resistance.
[0207] The main member 330 includes a front surface member 340 and an upper surface member
350. The front surface member 340 is installed vertically inside the storage room
27, and the upper surface member 350 is rotatably connected to an upper end of the
front surface member 340 and covers a rear upper end of the front surface member 340.
[0208] In addition, the exterior material 360 preferably includes a front exterior material
362 and an upper exterior material 364. The front exterior material 362 is installed
in close contact with a front surface of the front surface member 340 and the upper
exterior material 364 is installed in close contact with an upper surface of the upper
surface member 350.
[0209] In addition, the front exterior material 362 is preferably provided as a separate
structure from the upper exterior material 364. That is, preferably, the front exterior
material 362 and the upper exterior material 364 are configured separately from each
other and are respectively installed to cover the front surface of the front surface
member 340 and the upper surface of the upper surface member 350.
[0210] A locking end 332 is provided on a lower end of the front surface member 340.
[0211] As illustrating in the drawings, preferably, the locking end 332 is formed by protruding
forward from the lower end of the front surface member 340, and is provided as two
locking ends 332 from side to side.
The locking end 332 is a portion where the rear end hook 260 is held and fastened.
Accordingly, the locking end 332 is preferably provided with a hook hole 332a penetrating
vertically. That is, the rear end hook 260 is inserted into the hook hole 332a provided
in the locking end 332.
[0212] The hook hole 332a is formed by penetrating the locking end 332 vertically, but may
be formed in a groove shape on the locking end 332. That is, the hook hole 332a may
be formed in a groove depressed downward from an upper surface of the locking end
332.
[0213] A bump 334 is provided on an inner side surface of the storage room 27 for preventing
rearward movement of the inner cover 300. That is, on left and right inner side surfaces
of the storage room 27, a pair of preventing steps 334 is formed to face each other.
[0214] As illustrating in the drawings, each of the preventing steps 334 is preferably formed
on an upper half portion of the inner side surface of the storage room 27 with a predetermined
length up and down.
[0215] In addition, the bump 334 is preferably formed to have elasticity. That is, preferably,
the bump 334 is integrally formed with the inner side surface of the storage room
27 which is formed of the same material of the exterior material 360 of the inner
cover 300, and a part of the inner side surface of the storage room 27 protrudes inward
to form the bump 334.
[0216] The bump 334 has elasticity to be moveable from side to side. That is, the bump 334
may have elasticity by a shape or a material thereof, and may be configured to be
moveable from side to side by elasticity of the inner side surface of the storage
room 27 which is integrally formed therewith.
[0217] Accordingly, when a predetermined external force is applied to the front surface
cover 310 of the inner cover 300 which is positioned in front of the bump 334, the
preventing steps 334 are retracted leftward and rightward by elasticity and the front
surface cover 310 is moveable rearward.
[0218] Preferably, when at least a force of about 3N is applied to the front surface cover
310 from the front, it is preferable that the bump 334 is designed to be retracted
leftward and rightward so that an upper end of the front surface cover 310 is moved
rearward.
[0219] When the upper half portion of the front surface cover 310 is moved rearward by passing
through the bump 334, the front surface cover 310 is rotated clockwise to be in close
contact with a rear surface 27a of the storage room 27 because a lower end of the
front surface cover 310 is fixed to be rotatable.
[0220] The bump 334 is preferably formed by protruding to interfere with a side surface
of the inner cover 300. The bump 334 preferably protrudes inward by an amount that
interferes with the side surface of the front surface cover 310 of the inner cover
300. That is, since the bump 334 functions to prevent rearward movement of the front
surface cover 310 of the inner cover 300, when the bump 334 is installed not to contact
with the side surface of the front surface cover 310, the function thereof is lost.
[0221] More preferably, the bump 334 protrudes to overlap the side surface of the inner
cover 300 by at least 0.5mm. This is for user convenience. That is, if necessary,
the user may push the inner cover 300 rearward to closely contact the rear surface
of the storage room 27 and use the entire inner space of the storage room 27 as a
storage space.
[0222] For example, when a user, especially a child, inserts a finger of the user into the
gap between the raising/lowering device 200 and the inner cover 300, it is necessary
to prevent that the front surface cover 310 is easily pushed rearward in order to
prevent the finger from being trapped. Therefore, appropriate elasticity may be provided
to prevent the front surface cover 310 from being pushed rearward.
[0223] However, when the bump 334 excessively protrudes inward and overlaps the side surface
of the inner cover 300 by a size larger than 0.5mm, the front surface cover 310 does
not pass over the bump 334 when the user pushes the front surface cover 310 rearward.
[0224] Contrarily, when the bump 334 overlaps the side surface of the inner cover 300 by
a side less than 0.5mm (equal to or less than 5mm), the front surface cover 310 falls
rearward by passing over the bump 334, even when the user grasps the raising/lowering
device 200 or only touches the front surface cover 310 during operation of putting
food into the storage room 27 or taking out food in addition to the case of pushing
the front surface cover 310 rearward. Therefore, there may be a safety accident or
may be inconvenient to use.
A fastening end 70 is provided in the step shape on a rear end of the storage room
27, that is, on an upper end of the rear surface 27a. The fastening end 70 has at
least one fastening bar 72.
[0225] The fastening end 70 is a portion where a rear end of the upper surface cover 320
of the inner cover 300 is seated, and the fastening bar 72 is a portion fitted into
a cover fastening member 354, which will be described hereinbelow.
[0226] In addition, at least one guide 80 is provided in an upward protruding shape in rear
of the fastening end 70, and guides a position where the rear end of the upper surface
cover 320 is mounted.
[0227] The front exterior material 362 and the upper exterior material 364 are preferably
provided as separate structures. That is, preferably, the front exterior material
362 and the upper exterior material 364 are formed separately from each other, and
are respectively installed to cover the front surface of the front surface member
340 and the upper surface of the upper surface member 350. As illustrating in the
drawings, the front exterior material 362 and the upper exterior material 364 arc
respectively formed in shapes corresponding to the front surface member 340 and the
upper surface member 350 of the main member 330. That is, the front exterior material
362 is formed vertically in the step shape like the front surface member 340 and the
upper exterior material 364 is formed of a flat plate having a predetermined width
like the upper surface member 350.
[0228] In addition, the lower end of the inner cover 300 is rotatably coupled to the bottom
surface of the storage room 27. Specifically, the lower end of the inner cover 300
has at least one cover hinge 348, which will be described hereinbelow, and the bottom
surface in the storage room 27 is provided with a hinge receiving part 27d, which
will be described hereinbelow, to rotatably support the cover hinge 348.
[0229] In addition, the cover hinge 348 includes a support end 348a and a hinge shaft 348b,
which will be described hereinbelow. The support end 348a is formed by extending perpendicularly
rearward from the lower end of the inner cover 300, and the hinge shaft 348b is formed
in a slender round bar shape at a rear end of the support end 348a.
[0230] Hereinbelow, configuration of the cover hinge 348 will be described in detail.
[0231] Hereinbelow, configuration of the main member 330 will be described in detail with
reference to FIG. 18. FIG. 18 is a perspective view illustrating the main member 330.
[0232] As illustrating in FIG. 18, the main member 330 includes the front surface member
340 installed vertically and the upper surface member 350 installed horizontally by
being rotatably hinge-coupled to the upper end of the front surface member 340.
[0233] The front surface member 340 is formed in the step shape like the front surface cover
310 described above, as illustrated in FIG. 18. That is, the front surface member
340 includes a main upper end portion 342, a main step surface 344, and a main lower
end portion 346. The main upper end portion 342 is provided to allow the upper surface
member 350 to be rotatably connected, the main step surface 344 is formed by being
bent perpendicularly forward from a lower end of the main upper end portion 342 and
extending, and the main lower end portion 346 is formed by being bent perpendicularly
downward from an end of the main step surface 344 and extending.
[0234] In addition, the locking end 332 is formed by protruding forward from a lower end
of the main lower end portion 346 of the front surface member 340, and the locking
end 332 has the hook hole 332a described above.
[0235] The main lower end portion 346 of the front surface member 340 is provided with the
cover hinge 348 at the lower end thereof.
[0236] As illustrated in FIG. 18, the cover hinge 348 includes the support end 348a formed
by extending perpendicularly rearward from the lower end of the front surface member
340 and the hinge shaft 348b formed at the rear end of the support end 348a.
[0237] As illustrated in the drawings, the pair of support ends 348a is provided, and the
hinge shaft 348b is connected between ends of the pair of support ends 348a. The hinge
shaft 348b is formed in the slender round bar shape, and is mounted to the hinge receiving
part 27d, which will be described hereinbelow.
[0238] The upper surface member 350 is rotatably connected to the upper end of the front
surface member 340. In addition, the upper surface member 350 is configured to be
rotated clockwise (in FIG. 18) in a connection state to the upper end of the front
surface member 340 so as to overlap the front surface member 340.
[0239] The upper surface member 350 has a fastening step 352 protruding downward on a rear
end of a lower surface. The fastening step 352 is seated in the fastening end 70 formed
at the rear end of the storage room 27. That is, the fastening step 352 is seated
to contact the front of the fastening end 70 formed in the step shape.
[0240] In addition, as illustrated in the drawings, the fastening step 352 is formed in
a width direction of the lower surface of the upper surface member 350, and the cover
fastening member 354 is formed in rear of the fastening step 352.
[0241] The cover fastening member 354 is provided so that the fastening bar 72 of the storage
room 27 is inserted therein by elasticity. The cover fastening member 354 includes
a moving protrusion 354a and a fixed protrusion 354b, the moving protrusion 354a is
formed such that a part of the fastening step 352 is cut and the fixed protrusion
354b is formed by protruding downward from the lower surface of the upper surface
member 350.
[0242] Preferably, the moving protrusion 354a is formed such that a thickness thereof is
gradually increased from an upper end thereof to a lower end thereof and the lower
end is positioned further rearward than the upper end.
[0243] The fixed protrusion 354b is formed to face the moving protrusion 354a at a predetermined
distance, and is preferably provided such that a thickness thereof is gradually increased
from an upper end thereof to a lower end thereof and the lower end is positioned further
forward than the upper end.
[0244] Likewise, the moving protrusion 354a and the fixed protrusion 354b are paired, and
are provided so that the fastening bar 72 is inserted therein. Accordingly, the moving
protrusion 354a and the fixed protrusion 354b are preferably provided such that a
distance therebetween is gradually decreased from the upper side to the lower side,
and a lower gap between the moving protrusion 354a and the fixed protrusion 354b is
formed to be smaller than an external diameter of the fastening bar 72.
[0245] Accordingly, when the rear end of the upper surface member 350 closely contacts the
rear end of the storage room 27 from the upper side to the lower side, a lower end
of the cover fastening member 354 contacts an upper end of the fastening bar 72. In
this state, when the upper surface member 350 is lowered continuously, the fastening
bar 72 pushes between the moving protrusion 354a and the fixed protrusion 354b so
that the moving protrusion 354a and the fixed protrusion 354b are separated from each
other by their own elasticity. Thus, the fastening bar 72 is inserted between the
moving protrusion 354a and the fixed protrusion 354b and fixed therein.
[0246] FIGS. 19 to 21 are sectional views illustrating configuration of the inner cover
300 in detail. That is, FIG. 19 is a right side sectional view of the inner cover
300, FIG. 20 is a sectional view illustrating a state of separating the front surface
cover 310 and the upper surface cover 320 from each other, and FIG. 21 is an exploded
sectional view illustrating each of the front surface cover 310 and the upper surface
cover 320.
[0247] As illustrating in the drawings, the upper surface cover 320 is hinge-coupled to
the front surface cover 310.
[0248] Specifically, the front surface cover 310 is configured of the front exterior material
362 and the front surface member 340, and the front surface member 340 has a shaft
fixing means 370 at the upper end thereof.
[0249] The shaft fixing means 370 is rotatably fixed to the front surface member with receiving
a rotation shaft 350a. The rotation shaft 350a includes a shaft groove 372 receiving
the rotation shaft therein, and an upper rib 374 and the lower rib 376 that are formed
at an upper side and a lower side of the shaft groove 372.
[0250] As illustrated in the drawings, the shaft groove 372 is formed in a semicircular
shape and formed to be open rightward.
[0251] As illustrated in the drawings, the upper rib 374 and the lower rib 376 are formed
by being bent perpendicularly rightward from the upper end of the front surface member
340 and extending. In addition, right ends of the upper rib 374 and the lower rib
376 are formed closer to each other than left ends thereof.
[0252] More preferably, the right ends of the upper rib 374 and the lower rib 376 are close
to each other and formed in a concave shape. Preferably, a distance between the right
ends of the upper rib 374 and the lower rib 376 is formed to be smaller than an external
diameter of the rotation shaft 350a, which will be described hereinbelow. Accordingly,
when the rotation shaft 350a is inserted into the shaft groove 372, the rotation shaft
350a is not removed rightward by elasticity of the upper rib 374 and the lower rib
376.
[0253] Upper ends of the front surface member 340 and the front exterior material 362 are
recessed rightward to form a rib groove 378. The rib groove 378 is a part where a
tip rib 364a of the upper exterior material 364 is seated thereon.
[0254] As illustrated in the drawings, the upper surface cover 320 is configured of the
upper exterior material 364 and the upper surface member 350.
[0255] The rotation shaft 350a is formed by protruding downward on a left end of the upper
surface member 350. The rotation shaft 350a is formed in the slender round bar shape,
is inserted into the shaft groove 372, and is supported by the shaft holder 350b.
[0256] Specifically, a left end portion of the upper surface member 350 has the shaft holder
350b protruding downward and leftward, the rotation shaft 350a is provided on a left
end portion of the shaft holder 350b.
[0257] Accordingly, even when the upper surface member 350 is rotated clockwise while the
rotation shaft 350a is inserted in the shaft groove 372, the upper surface member
350 and the front surface member 340 do not interfere with each other and the upper
surface member 350 overlaps to a rear surface of the front surface member 340 (to
a right surface in FIG. 20).
[0258] The tip rib 364a is provided at an end (left end in FIG. 20) of the upper exterior
material 364. The tip rib 364a is formed by being bent perpendicularly downward from
the end of the upper exterior material 364, and is seated on the rib groove 378 that
is the upper front surface (left surface in FIG. 20) of the front surface cover 310.
[0259] FIG. 22 is a sectional view illustrating a state of an upper end portion of the inner
cover 300 fastened to an upper end of the storage room.
[0260] As illustrated in the drawing, the rear end of the inner cover 300 is coupled to
the rear end of the storage room 27. That is, the upper surface cover 320 is provided
to cover the upper surface of the rear end of the storage room 27, and the rear end
thereof is fixed to the rear end of the storage room 27 by elasticity.
[0261] In addition, the guide 80 is provided by protruding upward on the rear end (right
end in FIG. 22) of the storage room 27. The guide 80 protrudes upward higher than
the fastening end 70, and guides the rear end (right end in FIG. 22) of the upper
surface cover 320 not to pass over (right side in FIG. 22) the guide 80, when the
upper surface cover 320 of the inner cover 300 is mounted (assembled) to the storage
room 27.
[0262] Preferably, the rear end of the storage room 27 is further provided with a deodorizer
90, and the deodorizer 90 is mounted to be detachable.
[0263] FIG. 23 is an enlarged sectional view illustrating a state of the lower end of the
inner cover 300 mounted to the bottom surface of the storage room 27. As illustrated
in the drawing, the raising/lowering device 200 is placed on the bottom surface of
the storage room 27 in the folded state. Specifically, as described above, the raising/lowering
device 200 is positioned at a front lower end of the inner cover 300. That is, on
the bottom surface of the storage room 27, the raising/lowering device 200 for raising
and lowering the container 40 is installed, and the raising/lowering device 200 is
positioned in front of the front surface cover 310 of the inner cover 300.
[0264] Between the raising/lowering device 200 and the inner cover 300, a covering means
is provided. That is, since the raising/lowering device 200 is installed to be removable
by being lifted upward, as described above, a gap is formed between the rear end of
the raising/lowering device 200 and the inner cover 300.
[0265] Accordingly, there is a problem a user's inserting a finger into the gap. Especially,
there may be a safety accident in which a child's finger is trapped in the gap.
[0266] Accordingly, the covering means is required for covering the gap between the raising/lowering
device 200 and the inner cover 300, and the cover piece 270 is used as the covering
means.
[0267] As described above, on the upper end of the raising/lowering device 200, the support
plate 210 is provided to have the shape corresponding to the shape of the lower end
of the container 40 so as to support the lower end thereof. The cover piece 270 is
provided at the rear end of the support plate 210.
[0268] As described above, the cover piece 270 is formed by extending rearward from the
rear end of the raising/lowering device 200 at a predetermined length. Specifically,
the cover piece 270 is formed of a flat plate having a predetermined thickness, and
is formed by extending rearward from the rear end of the support plate 210 of the
raising/lowering device 200 at a predetermined length.
[0269] Preferably, a gap L between the cover piece 270 and the inner cover 300 is formed
less than 6mm considering a thickness of a user's finger. That is, usually, a thickness
of a person's finger is greater than 6mm, so that the gap L is formed with a width
of 6mm to prevent the person's finger from being inserted therein.
[0270] In addition, as illustrated in the drawings, the cover piece 270 and the step surface
314 are preferably installed to overlap each other up and down. That is, the cover
piece 270 is positioned above the step surface 314 that is provided in the front surface
cover 310 of the inner cover 300, and preferably, the step surface 314 and the cover
piece 270 are provided to overlap each other.
[0271] When the cover piece 270 and the step surface 314 overlap up and down, even when
the finger of a user is inserted from the upper side into the gap L between the cover
piece 270 and the inner cover 300, the step surface 314 prevents the insertion of
the finger.
[0272] In addition, it is preferable that a height between the cover piece 270 and the step
surface 314 is formed higher than 10mm. This is for protecting a child's finger.
[0273] For example, even when the gap L between the cover piece 270 and the inner cover
300 is formed less than 6mm, the child's finger may be inserted into the gap L and
lowered downward. Even in this case, it is possible that a child's finger is trapped
between the cover piece 270 and the step surface 314.
[0274] That is, since the raising/lowering device 200 is seated downward due to its own
weight, when the height H between the cover piece 270 and the step surface 314 is
formed less than 10mm, a child's finger may be pressed between the cover piece 270
and the step surface 314, thereby causing a safety accident. The height H of 10mm
or more is to prevent the safety accident.
[0275] In addition, the lower end of the inner cover 300 is rotatably coupled to the bottom
surface of the storage room 27.
[0276] Accordingly, as described above, at least one cover hinge 348 is provided at the
lower end of the inner cover 300, and the hinge receiving part 27d rotatably supporting
the cover hinge 348 is provided at the bottom surface in the storage room 27.
[0277] The hinge receiving part 27d is provided to be open upward at the rear end of the
bottom surface of the storage room 27. That is, as illustrated in the drawing, the
hinge receiving part 27d is formed to have a semicircular inner section and supports
the hinge shaft 348b to be removable upward and mountable from above.
[0278] FIG. 24 is a partial cut sectional view illustrating an installation state of each
of the front surface cover 310 and the bump 334. That is, the drawing illustrates
a partial cut perspective view in which the upper surface cover 320 is rotated on
the rotation shaft 350a so that the front surface cover 310, and the upper surface
cover 320 are overlap and the bump 334 prevents the rearward movement of the front
surface cover 310.
[0279] As illustrated in the drawing, the front surface cover 310 is installed to be positioned
in front of the bump 334 (left side in FIG. 24), and is prevented to be moved rearward
(right side in FIG. 24). That is, the bump 334 prevents the rearward movement of the
front surface cover 310 by elasticity.
[0280] Accordingly, illustrated in the drawing, the bump 334 is formed by protruding inward
to interfere with the side surface of the inner cover 300. That is, the bump 334 protrudes
inward from the inside surface of the storage room 27 to interfere with the side surface
of the inner cover 300.
[0281] In addition, the bump 334 may be integrally formed with the inner surface of the
storage room 27 or may be provided as a separate structure to be attached to the inner
surface of the storage room 27.
[0282] The bump 334 is preferably formed by protruding to overlap the side surface of the
inner cover 300 by at least 0.5mm. Accordingly, as described above, when the inner
cover 300 is pushed over a predetermined force, the inner cover 300 is movable past
the bump 334.